class UsersController < ApplicationController
    before_action :signed_in_user, only:[:edit, :update, :index]
    before_action :correct_user, only:[:edit, :update]
    before_action :admin_user, only:[:destroy]

  def create
    @user = User.new(user_params)
    if @user.save
      flash[:success] = "Welcome to the sample App!"
      redirect_to @user
    else
      render "new"
    end
  end

  def new
    @user = User.new
  end

  def show
      @user = User.find(params[:id])
      @microposts = @user.microposts.paginate(page: params[:page])
  end

  def index
    @users = User.paginate(page: params[:page])
  end

  def edit
    @user = User.find(params[:id])
  end

  def update
    @user = User.find(params[:id])
    if @user.update_attributes(user_params)
        flash[:success] = "Profile updated"
        redirect_to @user
    else
        render 'edit'
    end
  end

  def destroy
      User.find(params[:id]).destroy
      flash[:success] = "Delete user succ"
      redirect_to users_path
  end

  def following
    @title = "Following"
    @user = User.find(params[:id])
    @users = @user.followed_users.paginate(page: params[:page])
    render 'show_follow'
  end

  def followers
    @title = "Followers"
    @user = User.find(params[:id])
    @users = @user.followers.paginate(page: params[:page])
    render 'show_follow'
  end

  private
    def user_params
      params.require(:user).permit(:name, :email, :password, :password_confirmation)
    end

    def signed_in_user
        unless signed_in?
            store_location
            redirect_to signin_url, notice:"Please sign in"
        end
    end

    def correct_user
        @user = User.find(params[:id])
        redirect_to(root_path) unless current_user?(@user)
    end

    def admin_user
        redirect_to(root_path) unless current_user.admin
    end
end
